117 lines
3.0 KiB
Lua
117 lines
3.0 KiB
Lua
--
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-- SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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--
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-- Copyright (c) 2015 Pedro Souza <pedrosouza@freebsd.org>
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-- All rights reserved.
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--
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-- Redistribution and use in source and binary forms, with or without
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-- modification, are permitted provided that the following conditions
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-- are met:
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-- 1. Redistributions of source code must retain the above copyright
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-- notice, this list of conditions and the following disclaimer.
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-- 2. Redistributions in binary form must reproduce the above copyright
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-- notice, this list of conditions and the following disclaimer in the
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-- documentation and/or other materials provided with the distribution.
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--
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-- THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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-- ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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-- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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-- ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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-- FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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-- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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-- OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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-- HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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-- LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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-- OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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-- SUCH DAMAGE.
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--
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-- $FreeBSD$
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--
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local core = require("core")
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local color = {}
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-- Module exports
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color.BLACK = 0
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color.RED = 1
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color.GREEN = 2
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color.YELLOW = 3
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color.BLUE = 4
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color.MAGENTA = 5
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color.CYAN = 6
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color.WHITE = 7
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color.DEFAULT = 9
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color.BRIGHT = 1
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color.DIM = 2
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function color.isEnabled()
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local c = loader.getenv("loader_color")
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if c ~= nil then
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return c:lower() ~= "no" and c ~= "0"
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end
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return not core.isSerialBoot()
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end
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color.disabled = not color.isEnabled()
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function color.escapefg(color_value)
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if color.disabled then
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return color_value
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end
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return core.KEYSTR_CSI .. "3" .. color_value .. "m"
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end
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function color.resetfg()
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if color.disabled then
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return ''
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end
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return color.escapefg(color.DEFAULT)
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end
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function color.escapebg(color_value)
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if color.disabled then
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return color_value
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end
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return core.KEYSTR_CSI .. "4" .. color_value .. "m"
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end
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function color.resetbg()
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if color.disabled then
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return ''
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end
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return color.escapebg(color.DEFAULT)
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end
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function color.escape(fg_color, bg_color, attribute)
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if color.disabled then
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return ""
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end
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if attribute == nil then
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attribute = ""
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else
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attribute = attribute .. ";"
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end
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return core.KEYSTR_CSI .. attribute ..
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"3" .. fg_color .. ";4" .. bg_color .. "m"
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end
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function color.default()
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if color.disabled then
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return ""
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end
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return color.escape(color.DEFAULT, color.DEFAULT)
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end
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function color.highlight(str)
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if color.disabled then
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return str
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end
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-- We need to reset attributes as well as color scheme here, just in
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-- case the terminal defaults don't match what we're expecting.
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return core.KEYSTR_CSI .. "1m" .. str .. core.KEYSTR_CSI .. "22m"
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end
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return color
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